package ch11;

import java.sql.*;
public class Example11_1 {
    public static void main(String args[]) {
        Connection con=null;
        Statement sql;
        ResultSet rs;
        try{  Class.forName("com.mysql.cj.jdbc.Driver"); //加载JDBC_MySQL驱动
        }
        catch(Exception e){}
        String uri = "jdbc:mysql://localhost:3306/students?serverTimezone=GMT%2B8";
        String user ="root";
        String password ="wzh990213";
        try{
            con = DriverManager.getConnection(uri,user,password);
        }
        catch(SQLException e){ }
        try {
            sql=con.createStatement();
            rs=sql.executeQuery("SELECT * FROM mess");
            while(rs.next()) {
                String number=rs.getString(1);
                String name=rs.getString(2);
                Date date=rs.getDate(3);
                float height=rs.getFloat(4);
                System.out.printf("%s\t",number);
                System.out.printf("%s\t",name);
                System.out.printf("%s\t",date);
                System.out.printf("%.2f\n",height);
            }
            con.close();
        }
        catch(SQLException e) {
            System.out.println(e);
        }
    }
}